... range I.Multi-Function Process CalibratorII.Brief Introduction1. Measure V, mA, Ω, frequency, temperature, 40000 reading max2. Source V, mA, frequency, high resolution, voltage ... source two functions, show and control in double display5. 32 function keys and numeric keys, setup and modify source value by ... % + 100.1% + 100.1% + 100.05Hz0.5Hz2Hz0.3% + 1°C Multi-Function Process Calibrator